Hi Bill,
Thanks for the suggestions. I managed to get it working in the end - I made the changes you mentioned and played around with the client id value. I noticed that it had to be a hexadecimal value and looking at previous instructions, I generated one based on the format macaddress@skydsl|12345678 and it picked up an IP instantly. Not sure if this is correct but if it works, i'm not complaining 
Many thanks for your help, much appreciated!